using Axibug;
using Axibug.Event;
using Axibug.Resources;
using Axibug.Runtime;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using TMPro;
using UnityEditor;
using UnityEngine;

namespace Game
{
    public class ResourcesComponent : GameComponent
    {
        public delegate void CallBackFunction(Object obj, CallbackType err, object userData = null);
        private Dictionary<string, CallBackFunction> _dicAssetToFuns;
        private List<Sprite> _skillIcons = new List<Sprite>();

        private string _rootPath = "Assets/GameAssets";

        protected override void Awake()
        {
            base.Awake();
        }

        private void Start()
        {
            _dicAssetToFuns = new Dictionary<string, CallBackFunction>();
            PrefabManager.LoadPrefabSuccess += OnLoadPrefabSuccess;
            PrefabManager.LoadPrefabFailure += OnLoadPrefabFailure;

            //TODO 如果需要初始化
        }


        private void OnLoadPrefabSuccess(object sender, LogicEventArgs e)
        {
            LoadPrefabSuccessEventArgs prefab = (LoadPrefabSuccessEventArgs)e;
            if (prefab == null)
                throw new GameException("LoadPrefabSuccessEventArgs = null");

            if (!_dicAssetToFuns.TryGetValue(prefab.AssetName, out CallBackFunction fun))
                return;

            fun(prefab.obj, CallbackType.Success, prefab.UserData);
        }

        private void OnLoadPrefabFailure(object sender, LogicEventArgs e)
        {
            LoadPrefabFailureEventArgs prefab = (LoadPrefabFailureEventArgs)e;
            if (prefab == null)
                throw new GameException("LoadPrefabFailureEventArgs = null");

            if (!_dicAssetToFuns.TryGetValue(prefab.AssetName, out CallBackFunction fun))
                return;

            Log.Warning($"abName = {prefab.Name}, assetName = {prefab.AssetName}");
            fun(null, CallbackType.NullAsset);
        }

        private string GetBundleName(string assetsName, bool isFolder = false)
        {
            //Assets/GameAssets/Character/Player/GS_M/Prefab/GS_M.prefab
            //Assets/GameAssets/Prefabs/UI/Loading/Loading.prefab
            if (string.IsNullOrEmpty(assetsName))
                throw new GameException("GetBundleName---assetsName is invalid");

            //Character/Player/GS_M/Prefab/GS_M.prefab
            //Prefabs/UI/Loading/Loading.prefab
            string tmp = assetsName.Remove(0, _rootPath.Length + 1);

            if (isFolder)
                return tmp.ToLower();

            //Character/Player/GS_M/Prefab
            int idx = tmp.LastIndexOf('/');
            string bundleName = tmp.Substring(0, idx);

            //if(bundleName.Contains("Character") || bundleName.Contains("Maps")
            //    || bundleName.Contains("MiniMapTexture") || bundleName.Contains("TMPColor"))
            if (bundleName.Contains("Character") || bundleName.Contains("TMPColor"))
            {
                idx = bundleName.LastIndexOf('/');

                //Character/Player/GS_M
                bundleName = bundleName.Substring(0, idx);
            }

            //prefabs/ui/loading
            return bundleName.ToLower();
        }

        public void LoadAssetAsync(string assetName, CallBackFunction fun = null, object userData = null)
        {
            if (fun != null && !_dicAssetToFuns.ContainsKey(assetName))
                _dicAssetToFuns.Add(assetName, fun);

            string abName = GetBundleName(assetName);

            if (AppEntry.Base.EditorResourceMode)
                LoadAssetByEditorAsync(abName, assetName, fun, userData);
            else
                LoadPrefabByABAsync(abName, assetName, null, userData);
        }


        public void LoadAssetAsync(string abName, string assetName, CallBackFunction fun = null, object userData = null)
        {
            if (fun != null && !_dicAssetToFuns.ContainsKey(assetName))
                _dicAssetToFuns.Add(assetName, fun);

            if (AppEntry.Base.EditorResourceMode)
                LoadAssetByEditorAsync(abName, assetName, fun, userData);
            else
                LoadPrefabByABAsync(abName, assetName, null, userData);
        }

//        public Sprite LoadSprite(string atlas, string spriteName, bool isAtlas = true, string suffix = "png")
//        {
//            if (AppEntry.Base.EditorResourceMode)
//            {
//#if UNITY_EDITOR
//                string assetName = Utility.Path.GetImageUIPath(atlas, spriteName, suffix);
//                return AssetDatabase.LoadAssetAtPath<Sprite>(assetName);
//#endif
//                return null;
//            }
//            else
//            {
//                string atlasFullPath = $"Assets/GameAssets/Image/UI/{atlas}";

//                if (atlas.Contains("Icon/"))
//                    atlas = atlas.Split('/')[1];

//                string abName = GetBundleName($"{atlasFullPath}/{atlas}");

//                if (isAtlas)
//                    return LoadAtlasSprite(abName, atlas, spriteName);

//                return AssetManager.LoadAsset<Sprite>(abName, spriteName);
//            }
//        }

        //public Sprite LoadAtlasSprite(string abName, string atlas, string spriteName)
        //{
        //    string assetName = Utility.Path.GetImageUIPath(atlas, spriteName);

        //    if (AppEntry.Base.EditorResourceMode)
        //        return LoadSpriteByEditor(assetName); //LoadAssetByEditor Obj强转Sprite无效
        //    else
        //        return LoadPrefabByAB<Sprite>(abName, assetName, null);
        //}


        private Sprite LoadSpriteByEditor(string assetName)
        {
#if UNITY_EDITOR
            Sprite asset = AssetDatabase.LoadAssetAtPath<Sprite>(assetName);
            return asset;
#endif
            return null;
        }
        /*
        public TMP_ColorGradient LoadColorGradient(string ColorName)
        {
            if (AppEntry.Base.EditorResourceMode)
            {
#if UNITY_EDITOR
                string assetName = Utility.Path.GetColorGradientPath(ColorName);
                return AssetDatabase.LoadAssetAtPath<TMP_ColorGradient>(assetName);
#endif
                return null;
            }
            else
            {
                string atlasFullPath = $"Assets/GameAssets/Font/TMPColor/{ColorName}";

                string abName = GetBundleName($"{atlasFullPath}");

                return AssetManager.LoadAsset<TMP_ColorGradient>(abName, ColorName);
            }
        }*/
        public T[] LoadAssets<T>(string folder) where T : Object
        {
            string path = GetBundleName(folder, true);

#if UNITY_EDITOR
            
            if(AppEntry.Base.EditorResourceMode)
            {
                FileInfo[] files = new DirectoryInfo(folder).GetFiles();
                List<T> objs = new List<T>();
                foreach (FileInfo file in files)
                {
                    if (file.FullName.EndsWith(".meta"))
                        continue;

                    int idx = file.FullName.IndexOf("Assets");
                    path = file.FullName.Substring(idx);
                    T obj = AssetDatabase.LoadAssetAtPath<T>(path);
                    objs.Add(obj);
                    //var obj = LoadAssetByEditor(path);
                    //objs.Add((T)obj);
                }

                return objs.ToArray();
            }
#endif
            return AssetManager.LoadAssets<T>(path);
        }

        private void LoadAssetByEditorAsync(string abName, string assetName, CallBackFunction fun = null, object userData = null)
        {
#if UNITY_EDITOR
            Object asset = AssetDatabase.LoadAssetAtPath<Object>(assetName);

            if (asset != null)
            {
                LoadPrefabSuccessEventArgs success = LoadPrefabSuccessEventArgs.Create(abName, assetName, 0, asset, userData);
                OnLoadPrefabSuccess(null, success);
                ReferencePool.Release(success);
            }
            else
            {
                LoadPrefabFailureEventArgs failure = LoadPrefabFailureEventArgs.Create(abName, assetName, 0);
                OnLoadPrefabFailure(null, failure);
                ReferencePool.Release(failure);
            }
#endif
        }

        public void Clone(string assetName, CallBackFunction fun = null, Transform parent = null, object userData = null, string abSuffix = null)
        {
            if (fun != null)
            {
                if (!_dicAssetToFuns.ContainsKey(assetName))
                    _dicAssetToFuns.Add(assetName, fun);
                else
                    _dicAssetToFuns[assetName] = fun;
            }

            string abName = GetBundleName(assetName);

            if (AppEntry.Base.EditorResourceMode)
                LoadPrefabByEditor(abName, assetName, parent, userData);
            else
            {
                LoadPrefabByABAsync(abName, assetName, parent, userData);
            }
        }

        // 同步实例化预制体
        public GameObject CloneBySync(string assetName, Transform parent = null,  string abSuffix = null)
        {
            string abName = GetBundleName(assetName);

            Object asset = null;
            if(AppEntry.Base.EditorResourceMode)
            {
#if UNITY_EDITOR
                asset = AssetDatabase.LoadAssetAtPath<GameObject>(assetName);
#endif
            }
            else
            {
                asset = LoadPrefabByAB<Object>(abName, assetName, parent);
            }

            if (asset == null)
            {
                Debug.LogError($"asset加载失败，path={assetName}");
                return null;
            }

            GameObject go = Instantiate(asset, parent) as GameObject;
            if (go == null)
            {
                Debug.LogError("LoadPrefabByEditor2. go == null. asset:" + asset);
                int id = assetName.GetHashCode();
                LoadPrefabFailureEventArgs failure = LoadPrefabFailureEventArgs.Create(abName, assetName, id);
                OnLoadPrefabFailure(null, failure);
                ReferencePool.Release(failure);
            }
            return go;
        }

        private void LoadPrefabByEditor(string abName, string assetName, Transform parent = null, object userData = null)
        {
#if UNITY_EDITOR
            Object asset = AssetDatabase.LoadAssetAtPath<Object>(assetName);
            if(asset == null)
            {
                Log.Error($"asset加载失败，path={assetName}");
                return;
            }

            GameObject go = Instantiate(asset, parent) as GameObject;

            int id = assetName.GetHashCode();

            if (go != null)
            {
                LoadPrefabSuccessEventArgs success = LoadPrefabSuccessEventArgs.Create(abName, assetName, id, go, userData);
                OnLoadPrefabSuccess(null, success);
                ReferencePool.Release(success);
            }
            else
            {
                LoadPrefabFailureEventArgs failure = LoadPrefabFailureEventArgs.Create(abName, assetName, id);
                OnLoadPrefabFailure(null, failure);
                ReferencePool.Release(failure);
            }
#endif
        }


        private void LoadPrefabByABAsync(string abName, string assetName, Transform parent = null, object userData = null)
        {
            int id = assetName.GetHashCode();

            PrefabManager.LoadPrefabAsync(abName, assetName, id, parent, userData);
        }

        private T LoadPrefabByAB<T>(string abName, string assetName, Transform parent = null) where T : Object
        {
            int id = assetName.GetHashCode();

            return PrefabManager.LoadPrefab<T>(abName, assetName, id, parent);
        }

        public void Destory(string assetName)
        {
            if (AppEntry.Base.EditorResourceMode)
            {
                int startIdx = assetName.LastIndexOf('/') + 1;
                int endIdx = assetName.IndexOf('.');
                assetName = assetName.Substring(startIdx, endIdx - startIdx);
                assetName += "(Clone)";

                Transform trans = GamePlayEntry.UI.transform.Find(assetName);
                if (trans == null)
                    return;

                DestroyImmediate(trans.gameObject);
            }
            else
                PrefabManager.DestoryByAssetName(assetName);
        }

        public Object LoadAsset(string assetName)
        {
            string abName = GetBundleName(assetName);
#if UNITY_EDITOR
            return AssetDatabase.LoadAssetAtPath<Object>(assetName);
#else
            return AssetManager.LoadAsset<Object>(abName, assetName.ToLower());
#endif
        }

        public void RemoveAsset(string assetName)
        {
            if (!AppEntry.Base.EditorResourceMode)
                AssetManager.Unload(assetName);
        }
    }
}